| 摘要 |
PROBLEM TO BE SOLVED: To provide an effective separation method when a solid particle having hydrogel particles or water is separated from an oil phase by filtration, sedimentation or the like, and thus a method for efficiently producing an refined oil. SOLUTION: The method for producing the refined oil in which the solid particle having the hydrogel particles or water is separated from the oil phase dewaters the solid particle having the hydrogel particles or water, and then separates. COPYRIGHT: (C)2006,JPO&NCIPI
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